Prologue: The Fall
The story starts during FNF's Week 3, with Boyfriend rap battling Pico. Each time Boyfriend loses, Girlfriend revives him by RESETting. Pico notices the RESETS and grows furious of Boyfriend's "cheating," trapping them in an infinite loop. As the week repeats, Pico slowly goes insane and kills Girlfriend, obtaining the power of RESETing. Boyfriend flees in terror and runs into Mt. Ebott, jumping into the underground.
Main Story: Determination
Boyfriend falls into the underground and faints, getting into a nightmare where lust to avenge Girlfriend fills his heart with Determination. The player takes control of BF using all his determination and gaining the power of "Perseverance." After trudging through the empty Ruins, Boyfriend encounters Sans past the Ruins door, who questions the absence of the Player's usual vessel. Confusing Sans with Pico, Boyfriend immediately begins attacking.
Snowdin Tragedy
In Snowdin Town, Papyrus calls out his missing brother's name. Boyfriend arrives and Papyrus asks if he knows where his brother is, saying everyone in town has disappeared. Papyrus decides to capture Boyfriend for being human and accepts the rapper's singing game. During the song, Papyrus is hit by a blaster fired by Sans, who mocks the human and tells him to "be faster next time."
Multiple Endings
The mod features multiple endings based on player choices. The Genocide route continues the cycle of violence, while the Pacifist route requires not attacking Sans in the final battle. Different choices trigger different endings and unlock secret content. The True Ending requires specific conditions to be met throughout the playthrough.